Definition
To have something on your side means that you possess an advantage that improves your chances of success in a particular endeavor.
有利於己
He has extensive experience in the industry, so he has experience on his side for this project.
他在這個行業擁有豐富的經驗，所以這個項目他有經驗作為他的優勢。
The company has strong brand recognition on its side, which helps them stand out in the market.
這家公司擁有強大的品牌知名度作為優勢，這有助於他們在市場上脫穎而出。
Even though the product is new, its innovative technology has innovation on its side.
即使這個產品是新推出的，它的創新技術也是它的優勢。